Here is a list of all the postings Dickw has made in our forums. Click on a thread name to jump to the thread.
|Thread: Rather Fast|
The video in the OP is dated from 2016 and the Germans have "speed competitions" every year, so I guess people have been trying to go faster ever since. I watched one video which showed a RC heli doing 193 mph through the time trap - a very interesting sound from the rotors!
Makes the 180mph at the top of the climb with my F5B models seem very pedestrian. This video shows me launching a friends model in 2015.
Some people just love pure speed and all they want is to go faster all the time. With F5B we have the challenge of after doing the fast bit, as shown in the video, we go straight into a 10 minute thermal duration without landing - best of both worlds really.
|Thread: The Norwegian Gnat Squad|
38A? That might have been me, but I was using a 4s system to get 680gm thrust at 51,500 rpm.
Unfortunately the lock down means I have not flown it yet
|Thread: Coverings: not sure...|
Lots of light coveringl choices here, with How To do It links at bottom of the page.
|Thread: What Traders are still offering Mail Order? Services?|
Ordered yesterday, delivered this morning. Thanks George
|Thread: The Norwegian Gnat Squad|
I'm watching as well.
|Thread: 6 Turning 4 Burning|
When I brushed on PVA mould release I first applied a coat of matt "priming wax" to make sure it flowed correctly on the surface and gave me a smooth finish. Perhaps that might help here.
|Thread: information wanted|
Any useful information here?
It looks like the Highlight was a range of models so perhaps a universal fuselage that could be used as both electric or not. A fairly common approach among kit manufacturers.
|Thread: Twister 40, anybody know anything about one of these old motors.|
While looking for something completely different I just came across instructions and other info for the Twister 19/40.
Simon & David
MotoCalc also shows a Twister 29/60, with the few details available matching the spec for Simon's "29".
That gives me more confidence that David's motor is the 19/40 and the performance predictions I gave are reasonable.
I remember Twister motors and recall they were OK, but I have very limited information.
I found some information on a Twister 19/40 in MotoCalc but only that it is a 1000kV motor and weighs 175 gm (6.2 oz). what does yours weigh? Any other information on it?
If yours is the 19/40 then it should be good for 500 watts at 7000 rpm on 3s and a 14x6 prop with a 60 amp ESC. Should be enough fior Super 60.
Hope this helps.
|Thread: IC Engine Bearings...|
I have found this an interesting and informative discussion, and in case anyone is wondering why a dedicated electric flyer is interested it is because many of my motors use a two ball race planetary gearbox with the rear bearing taking the thrust (see photo of shaft), and a circlip to stop the shaft moving back. I was curious about the different approach, but I guess my gearbox doesn't have to deal with sideways loads as well.
Mention was also made of tapers at some point, and I do use a tapered collet to hold the prop to the shaft.
Not sure of the thrust of my motors, but enough to acclerate a 1.6Kg model from 0 to over 150mph in 3 seconds - 18.5 x 22 prop at 8,000 + rpm. so the gearbox has to be reasonably robust.
Good to keep learning in these present times!
Can I ask why they are not that shape? Not arguing, just curious.
Memories, but still available
Edited By Steve Hargreaves - Moderator on 20/03/2020 19:52:15
I must admit to being a bit confused by this discussion, but then I am an electrical engineer not a mechanical engineer. I would have thought that which bearing takes the thrust is a design decision not a universal principle.
I have attached a simple drawing and would be pleased if someone could explain why it might be wrong.
From memory of my pre-electric days I had a number of "single ball-race" engines with plain front bearings in which the rear bearing must have handled the thrust. That could be changed by adding a front "ball-race" but it surely doesn't have to does It?
Edited By Steve Hargreaves - Moderator on 20/03/2020 19:49:27
|Thread: Netflix scam|
I had one of those as well. I tried to report it to Netflix as a scam but couldn't find any way of doing that on their website, so I deleted it.
I suppose it could be a new marketing strategy
|Thread: New EDF Mini Jets- Jet Provost & Folland Gnat|
I also got mine from Real Model Pilots at 1/12 scale for my Gnat, but went for the painted version. They did a really nice job of painting - most impressed.
|Thread: Vac Forming|
Have you tried Vortex Vacforms?
I have always found them helpful.
|Thread: Insanity seems to be setting in|
BMFA statement re flying at Buckminster here.
|Thread: Replacement Charger?|
Thanks Phil. I figured that was probably the answer but had to check as I am impressed by my ISDT charger.
Mind you, the iCharger 1010 and Chargery 50010 are also doing fine on everything up to 10s as well.
I am intrigued by the reference to charging 10s Lipo. I like the ISDT products but need 10s chargers so had discounted them for that application. Are you splitting those packs for charging or do you know some trick I don't?
For 10s I am presently using iCharger or Chargery products.
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